Wikipedia

Chaetoceros

Gattung der Familie Chaetocerotaceae
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Systematik

Chaetoceros is probably the largest genus of marine planktonic diatoms with approximately 400 species described, although a large number of these descriptions are no longerVorlage:When valid. It is often very difficult to distinguish between different Chaetoceros species.[1] Several attempts have been made to restructure this large genus into subgenera and this work is stillVorlage:When in progress.[2][3] However, most of the effort to describe species has been focused in boreal areas, and the genus is cosmopolitan, so there are probably many tropical species still undescribed.[4]

Description

The genus Chaetoceros were first described by Ehrenberg in 1844.
Cells are more or less rectangular in girdle view.
Cells are usually elliptical in valve view.
Opposite setae of adjacent cells touch near their origin.

Chaetoceros is a type of centric diatom. These diatoms contain a frustrule or cell wall composed of silica that contain long, thin spins (setae). The spines connect the frustules together creating a colony of cells. [5] Cells colonies can form chains that are coiled, straight, or curved. Cell size can range from <10 um to 50um. [6]

Chaetoceros is primarily a marine genus, but there are also accounts of species within inland waters of the United States. This genus produces highly silicified resting cells that can be stored in sediments. Due its high growth rates and high lipid concentrations, research has been conducted to potentially use Chaetoceros as a biofuel.[7]

Some currently accepted Chaetoceros species

References

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  1. ↑ C.H. von Quillfeldt., (2001). Identification of Some Easily Confused Common Diatom Species in Arctic Spring Blooms. Botanica Marina Vol. 44: 375–389
  2. ↑ Tomas, C. R., Hasle G. R., Syvertsen, E. E., Steidinger, K. A., Tangen, K., Throndsen, J., Heimdal, B. R., (1997). Identifying Marine Phytoplankton, Academic Press.
  3. ↑ Rines J. E. B., Theriot E. C., (2003). Systematics of Chaetocerotaceae (Bacillariophyceae). I. A phylogenetic analysis of the family, Phycological research 51: 83-98.
  4. ↑ J.E.B. Rines, P. Boonruang and E.C. Theriot., (2000). Chaetoceros phuketensis sp. nov. (Bacillariophyceae): a new species from the Andaman Sea. Phycological Research 48 (3): 161–168.
  5. ↑ Spaulding, S., and Edlund, M. (2008). Chaetoceros. In Diatoms of the United States. Retrieved October 19, 2017, from http://westerndiatoms.colorado.edu/taxa/genus/Chaetoceros
  6. ↑ http://oceandatacenter.ucsc.edu/PhytoGallery/Diatoms/Chaetoceros.html
  7. ↑ Spaulding, S., and Edlund, M. (2008). Chaetoceros. In Diatoms of the United States. Retrieved October 19, 2017, from http://westerndiatoms.colorado.edu/taxa/genus/Chaetoceros
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